Calcolatore Variazione di EntropiaFormula

Entropy Change

Entropy measures the disorder or unavailability of energy in a system.

Formula

DeltaS = Q / T

for a reversible process at constant temperature. Positive DeltaS means entropy increases (heat absorbed). The second law states that total entropy of an isolated system never decreases.

Esempio Risolto

1000 J of heat absorbed at 300 K.

  1. DeltaS = Q / T
  2. DeltaS = 1000 / 300
  3. DeltaS = 3.333 J/K